diff --git a/src/Obj/Base/GroundSvg/index.js b/src/Obj/Base/GroundSvg/index.js
index d94cce8..5f74f8d 100644
--- a/src/Obj/Base/GroundSvg/index.js
+++ b/src/Obj/Base/GroundSvg/index.js
@@ -1212,7 +1212,7 @@ class GroundSvg extends Base {
   * @param {boolean} status=false 状态
   */
   drag(status, cd) {
-    if (!this.#loaded) {
+    if (!this.#loaded || !this.sdk || !this.sdk.viewer) {
       return
     }
     this.ismove = false
@@ -2020,6 +2020,9 @@ class GroundSvg extends Base {
       return
     }
     this.drag(false)
+    if(!this.sdk || !this.sdk.viewer) {
+      return
+    }
     this.sdk.viewer.entities.remove(this.entity)
     this.text && this.text.remove()
     for (let i = this.entity.values.length; i >= 0; i--) {
diff --git a/src/Obj/Base/LabelObject/index.js b/src/Obj/Base/LabelObject/index.js
index dfd9dc1..5b127cd 100644
--- a/src/Obj/Base/LabelObject/index.js
+++ b/src/Obj/Base/LabelObject/index.js
@@ -441,7 +441,7 @@ class LabelObject extends Base {
     clearTimeout(this.#updateBillboardImageTimeout)
     this.#updateBillboardImageTimeout = setTimeout(() => {
       clearTimeout(this.#updateBillboardImageTimeout)
-      this.entity.billboard.image = this.getcanvas()
+      this.entity && (this.entity.billboard.image = this.getcanvas())
     }, 500)
   }
   get lineColor() {
diff --git a/src/Obj/Base/TrajectoryMotion/index.js b/src/Obj/Base/TrajectoryMotion/index.js
index f561a70..e02a63a 100644
--- a/src/Obj/Base/TrajectoryMotion/index.js
+++ b/src/Obj/Base/TrajectoryMotion/index.js
@@ -655,7 +655,7 @@ class TrajectoryMotion extends Base {
         })
         this.TweenAnimate.pause()
         setTimeout(() => {
-          _this.model.isMove = false
+          _this.model && (_this.model.isMove = false)
         }, 200);
       }
     }
@@ -1531,7 +1531,7 @@ class TrajectoryMotion extends Base {
     else {
       setPosition(startDistance)
       setTimeout(() => {
-        _this.model.isMove = false
+        _this.model && (_this.model.isMove = false)
       }, 500);